Mosquito surveillance by the health district had previously detected West Nile virus-positive mosquitoes in three Clark County ZIP codes: 89027, 89032 and 89117.

“A confirmed case of West Nile virus in a Southern Nevada resident is an important reminder to everyone to take preventive measures against mosquito bites whether they are at home or traveling,” Dr. Joseph Iser, the district’s chief health officer, said in the release.

West Nile symptoms include fever, headache, body aches, nausea and vomiting, according to the health district.

Severe cases can lead to neurological illness and death.

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